Chain system of lock control.



w. P. LocKE. CH-AIN SYSTEM 0F LOCK CONTRIOL.

APPLICATION FILED 0CT9| I9I3.

Patented Apr.' 6, 1915 WTNESSES W. P. LOCKE.

CHAIN SYSTEM 0F LOCK CONTROL.

APPLICATION FILED ocr. 9. 1913.

2 SHEETS-SHEET 2.

. 4 o /fg W/T/VESSES: l v', l l/E/VTH 4, m/QML Patented Apr. 6, 1915.

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miran arianne ramena onirica..

WILLIAM P. LOCKE, OF CHICAGO, ILLINOIS, ASSIGNOR T0 WALLACE Gr. CLARK, OF

1 CHICAGO, ILLINOIS.

Specification of Letters Patent.

CHAIN SYSTEM 0F LOCK CONTROL.

vApplication iled October 9, 1913. Serial No. 794,222.

T0 all whom 'it may concern Be it known that I, WILLIAM P. Locks, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, have made a certain new and useful Inventionin Chain Systems of-LockControl, of

which are simple and eiicient whereby the doors, windows or other closures or a series or chain of such devices can not b e locked or unlocked unless and until a preceding closure of the series is locked or unlocked as the case may be.

A further object is to provide simple and efficient means whereby a series or chain of closures,l such as doors, windows, or the like are individually or independently locked or unlocked, and wherein the locking of one closure of the series serves to release a key necessary to effect the locking of the next consecutive closure of the series.

A further object is to provide a key'releasing lock system of the naturel referred to wherein the unlocking of any closure of the system or chains is a necessary precedent of the unlocking of the next consecutive closure of the series or system.

A further object is to combine with the key releasing lock system of the nature referred to and including a'series or chain of independent secondary locks, a master or primary lock of the recording type wherein the identity of the key emploved to lock or' unlock the same together with the time of its operation may be recorded, and the .unlocking of which is -necessary to be accomplished in order to release the key required owunlock the next succeeding secondary ook.

A further object is to providev a lsystem of the nature referred to wherein the master or recording lock can not be locked until the preceding secondary lock of the system has also been properly locked.

A further object is to provide key releasing mechanism which is simple and efficient.

Other objects of the invention .will appear more fully hereinafter.

Patented Apr. 6, 1915.

The invention consists substantially in the construction, combination, location, relation, relative arrangementof parts and system, all as will hereinafter be more fully set forth, as shown in the accompanying drawl ings, and finally pointed out in theappended claims.

- In the drawings z-Figure 1 shows a s eries of locks as embraced within a chain or succession of-interrelated' locking devices.

Fig. 2 is a detail view in section of a key barrel showing the application thereto of a key for operating a lock bolt. Fig. 3 is a view in section on the line 3,13 Fig. 4, looking in the direction of the arrows, showing a secondary lock and key release device e'mployed in connectionv with my invention. Fig. 4 is a view in elevation of a secondary lock and key release device, the front plate i of the casingremoved. Fig. 5 is a view in elevation showing a door and the application thereto of a secondary lock and key release device embodying my invention.

The same part is designated by the same reference `numeral wherever it throughout the several views. v

In accordance with my invention I propose to employ a series of locks which may be of any suitable or desired construction but. each requiring two keys for its operation and a key section for each kev. One of the two kevsfor each lock I will call the bolt operating key and the other the releasing key. The keys may be of any suitable tvne, such, Vfor instance. as the ordinary Yale key, and thekey sections are made to correspond to the keys employed. Iso construct the kev sections that the releasing key of one lock is'the'bolt operating key of the occurs immediately preceding lock of the system or series of locks,f or, it maybe. o'f the immediately succeeding lock 'of the series or system. V I also soconstruct each lock mec anism that the releasing key thereof cannot l@ detached therefrom -until the bolt operating key of that lock has` been inserted in its be called secondary locks. 1n case the-primary or master lock is of the recording type it is evident that any ot the commercial terms of recording locks may be used. ln-

practice ll preterto use as the master lock a lock of the recording type in which a plurality of bolt operating or controlling keys .are employed which respectively differentiate from each other in some particular, the recording mechanism operating to record the identity of each particularY key when used and the date and time of its use. lln

`this case a diderentiated key must loe used in the lock to release an auxiliary key, and

the key so released then becomes the releasing key for the bolt controlling key of the next lock ot the series or system, and so on through as many secondary locks as may he included in the system, the last released key of the system being 'retained by the user.

1n the use of this system let it be supl posed that all of the secondary devices et the entire systemare properly locked and the master or recording device is also locked properly. lin this condition the auxiliary key of the master lock Will he in its key section of that lock and incapable of removal until the bolt controlling key of the master or recording lock has been inserted in its proper section and operated to Withdraw the holt ot the said recording lock, in which case the identity and time'of operation of said key Will he recorded. Under the supposition valcove made each secondary lock oit the entire series or chain will have its bolt operating key inserted in its proper key section With the. bolt thereof shot or extended hut said Y bolt operating key cannot be Withdrawn nor manipulated to Withdraw the holt which it operates or controls. When the auxiliary' key of the master or recording lock has been Withdrawn from said lock, after being released by the action of the differentiated key, as above described, then said auxiliary key is employed to release the bolt operating key ont' the tlrst secondary lock of theseries, and permit, said key to Withdraw the bolt of its lock and then to be Withdrawn from the lock. vThis key then becomes the releasing key of the next secondary lock of the series and so on; lin order to again operate the bolt of the ymaster lock, that is, in order toy shoot said bolt into locking relation, it is rst necessary to insert the released key of the last secondary lock lof the series or system into its bolt operating key section, and shoot the bolt of that lock,

nie/neas Which action not only operates said bolt to locking position but it permits the releasing key of said lock to be` released and Withdrawn, the bolt operating key of said lock now remaining in its key section being held therein against operation or Withdrawal. The key thus released then is used as the bolt operating. key forcth'e next preceding Vlock of the system and so on throughout the entire chain of locks until the master lock is reached, the key released from the rst secondary lock of the system new being used as the auxiliary key for the master lock. it is obvious that the unlocking operation may terminate at any desired secondary lock, in Which case the remainingvlocks of the system Will remain undisturbedn ln this case the locking operation must commence with the secondary lockvvhere the unlocking operation ceased.

ln lilig. 1 ll have indicated. a master or recording lock at A, having the differentiated key 'section 6, and the auxiliary key section 7. At B, l), l have indicated secondary locks each having a bolt operating key section 9, and a key releasing key section The auxiliary key 8 when released from lock A is inserted in key section of lock B, and operated to release the key 11, which operates in the bolt operating key section 9 lock The keyrll then is inserted in the key section 10 of the -lock U, to release key 12 from key section 9 of lock C, the key 19 then is employed in key section 19 et lock D to release key 14; from key section 9 of d lock l) and so on. The secondary locks and the bolt operating and key releasing devices thereof may be of any suitable construction, A simple arrangement is shown wherein each lock comprises a casing 15, in which i;

the holt 16 is mounted to slide. The shank of the bolt is engaged in any convenient Way by the bolt operating key section 9, thereof, whereby, when the holt operating key is turned the bolt is moved. A simple embodiment of this idea is shown wherein the section 9 is provided With a segment gear 17 arranged to mesh With rack teeth 18, formed in the shank of the holt.

order to,r permit the bolt operating key to j be Withdrawn from the section 9, the bolt must he Withdrawn from its yprojecteoloor locking position. 'lhe releasing key section 10, carries a cam member 19, at its end, and

the shank of the bolt 16, is formed with a shoulder 20, behind Which the cam i9, en-I gages vvhen the bolt is in projected position and the key*v section 10 is turned.A This section cannot be turned until the bolt is in 'projected position for the reason that the cam 19 Will strike against the edge ot the bolt shank and will be held against turning until the shoulder 2O has passed the path of operation of the cam, and this must occur before the releasing key can be Withdrawn Vthe rod is in locking position also.

from the key section 10. The key sections 9, 10, may be supported in the casing 15 in any suitable or convenient manner. For illustrating purposes I have shown brackets 21, for this purpose. In like manner the bolt 16 may be held and guided in any suitable or convenient manner.

. lt may be sometimes desired to insure'that the door, window or other closure .to which a secondary lock is applied is fully closed and locked when the bolt operating key thereof is operated, thus guarding against the danger of the bolt being shot beforeA it is in/position to engage its keeper. A simple arrangement for accomplishing this purpose is shown wherein a closure locking rod 22 is employed and associated with the secondary lcck. through the lock casing and alongside the bolt 16, and its end 23 is designed to enter al socket or seat in the closure framing only when the closure is in fully closed position. The locking rod is provided in the side thereof with a transverse notch 24, which, when the end of said rod is seated in its socket in the closure framing, is brought into line with a rib 25 formed on the shank of the bolt, thereby permitting the bolt to be projected into locking position only when When ythe rod is withdrawn from locking position 'the notch is carried out of register with the rib 25'and consequently the bolt cannot be projected. The locking rod 22 may be held from turning in any convenient-man-- ner. A simple arrangement is shown wherein a transverse pin 26 is carried by said rod the ends of which bear against the guiding surfaces 27 of the casing and prevent axial movement of said rod.

A locking system as above described may i be applied in any situation where locks may 4be desired such as the doors, windows, gates,

shutters or other parts of dwellings, business houses, oiices, factories, shops, stores, cars, safes, and in fact wherever locks may be required. Having now set forth the objects and nature of my invention, and' a construction, arrangement, 'and system embodying the principles thereof, what I claim as new and useful, and of my own invention, and desire to secure by Letters Patent, is'- 1. A locking system including a plurality of lock devices, each employing an operating and a release key, the operating key of one constituting the release key of the next succeeding one of the series, one of said keys being always retained 1n each of said devices, and means whereby when one of said 'keys is in operating yposition the other is released for removal.

2. A locking system includina master lock and series of secondary l c s, operat- The rod is arranged to pass lock, an auxiliary ing keys for the master said auxiliary key key for .the master lock,

being releasable only when the bolt of the master lock is drawn, an operating and a release key for each secondary lock, said auxiliary key bein-g the release key for the first secondary lock of the series, the operating key of each secondary leek being the release key of the next succeeding secondary lock of the series.

3. A locking system includinga plurality of independent lock devices, and means whereby no lock of the system` can be oper- 'ated to lockedV condition until the succeeding lock of the system has first been oper- ,l ated to locked condition.

4. A locking system including a recording lock device anda plurality of independent secondary locking devices, andI means whereby the recording lock device can not be operated to unlocked condition until all the secondary lock devices have been operated to locked condition.

5. A locking system including a recording lock device and a plurality of independent secondary lock devices, and means whereby the recording lock device cannot be operated either to locked or unlocked condition until all the secondary lock devices have been operated to locked condition.-

6. A locking system including a recording lock device and a plurality of independent secondary lock devices, and means whereby the Arecording lock device cannot be operated either to locked or unlocked condition until all the secondary'lock devices have been operated to locked condition in sequential order.

7. A locking-system including a 'plurality of independent lock devices, and means whereby no lock-of the system can be operated to locked condition until all the succeeding locks of the entire system have been operated to locked condition in sequential order.

8. Alocking system consisting of a pluralityV of independent locks each including;a bolt operating and a key releasing device, and means whereby when one of the said devices is operated to released condition the other is locked against operation.

9. A locking system consist'ng' of a plurality of independent locks, each requiring a bolt operating and means whereby when one of said keys is inserted and operated to locked condition the other is released, the releasedf-key of one lock being required for the operation of the neXt successive lock of the system.

10. A locking system consisting of a plurality of independent locks each including a bolt, a bolt-operating section and a -key releasing section, and a means whereby when the bolt of any lock is shot the key releasing a key releasing key and.

section thereof is rendered operable to hold the bolt in shot condition and the bolt operating section is locked against operation.

11. A locking system consisting of a plurality of independent locks each including a shouldered bolt, a key operated section for moving the bolt, a key operated release section having a cam to coperate K with the shoulder on the bolt, when the latter is shot to hold the same in shot position, the release.

section operating key being releasahle only` when the cam is in engagement with the shoulder on the bolt andthe bolt operating key being releasable only when the bolt is Withdrawn from shot position, the bolt operating key of one lock constituting the release section operating key of the neat suc ce'edinGr lock of the system. l2., .e locking system consisting ol' a plurality of independent locks each includinga key operated lock and a key operated release section, and an auxiliary locking rod, and means whereby the lock holt cannot be shot luntil the auxiliary locking rod is in llocking position, the bolt operating key of one look 1 'forming the key release-section operating key or" the next succeeding lock of the system.

13. A locking system consisting of a plurality of independent locks each including a` key operated bolt and a key operated release nifeaeae .bolt can be operated only when the bolt is in locking position.

l5. A; locking system consisting of a plurality of independent locks, each including a bolt, a key operated bolt actuating section -and a key operatedreleasing section, and

means whereby when either of said sections is actuated to operative position the operating key. of either section is released, the bolt operating key ot' one lock constituting operating key forv the release section of next lock of `the system.

ln testimony whereof l have signed my name to this specification, in the presence o two subscribing witnesses, on this 17th day September A. i918.

lfl/'itnessesr y Meent J. @Het metan',

E. Denen?, 

